Browsing by Author "Lasarte, Natalia"
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Item Challenges for Digitalisation in Building Renovation to Enhance the Efficiency of the Process: A Spanish Case Study: A spanish case study(2021-11-03) Lasarte, Natalia; Elguezabal, Peru; Sagarna, Maialen; Leon, Iñigo; Otaduy, Juan Pedro; E&I SEGURAS Y RESILIENTES; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓNAlthough construction is one of the largest industries in the world, it is one of the least digitised and its productivity is still very low. Excesses of time and cost are common and are even more accentuated for building renovation. Recently, the building information modeling (BIM) methodology has strongly entered in the construction sector and appears to be an effective paradigm shift. Considering all of the previously mentioned aspects, this article addresses the identification and analysis of the critical barriers of renovation and the potential for digitalisation to overcome them using BIM. The methodology that was used is based on an open innovation approach called Living Labs, where consultations with the key stakeholders of the construction process aims for a higher digitalisation to focus on real needs and fitted to the user’s requirements. Starting from a worldwide survey, the analysis of the Spanish casuistry is deepened. From the analysis of barriers and opportunities, the necessary requirements for an optimal BIM application in renovation are highlighted. After identifying the key aspects that each stakeholder’ typology has considered as relevant, a set of key performance indicators have been selected, to monitor the improvements in the renovation process when BIM is adopted.Item A Methodology for the Digitalization of the Residential Building Renovation Process through OpenBIM-Based Workflows(2021-11-05) Armijo, Alberto; Elguezabal, Peru; Lasarte, Natalia; Weise, Matthias; DIGITALIZACIÓN Y AUTOMATIZACIÓN DE LA CONSTRUCCIÓN; ECOEFICIENCIA DE PRODUCTOS DE CONSTRUCCIÓN; E&I SEGURAS Y RESILIENTESThe European building industry is facing a strong increase in renovation processes, which are still non-cost-effective, involve unproperly coordinated stakeholders, are disturbing for the occupants, and cause important inefficiencies in the overall renovation process. In this context, digitalization and Building Information Modelling (BIM), as an enabler, is the key solution that may drive renovation interventions to ensure a more successful and leaner process, aiding the whole value chain of actors to achieve its full potential. This research describes the OpenBIM methodology applied in order to transform the implicit knowledge from the stakeholders involved in the building renovation process, not structured enough for automation, into an OpenBIM digital process based on the BIM standards. The outcomes of this research are the OpenBIM ready workflows that represent the renovation process and information requirements according to the involvement of different stakeholders rooted in the analysis of barriers, requirements, and needs. Those workflows are the basis for the future development of specific products and tools for boosting digitalization and interoperability in the renovation process.Item SOLUTIONS FOR DIGITISATION AND PREFABRICATION IN THE ENERGY REFURBISHMENT OF BUILDINGS(2020-02) Tellado-Laraudogoitia, Nagore; Lasarte, Natalia; Macías, Olga; Iturralde, Kepa; Bock, Thomas; Sebesi, Yvon; Tecnalia Research & Innovation; E&I SEGURAS Y RESILIENTES; EDIFICACIÓN DE ENERGÍA POSITIVAThe objective of this study is to evaluate the practical application of a digital process for the buildings’ energy rehabilitation using prefabricated modules. The literature is extensive in this aspect, numerous technologies are mentioned for the digitalization of buildings’ rehabilitation process (BIM, laser scanner, drones, etc.), and there are also many prefabricated products for rehabilitation, but its introduction in the market is still very limited. This is due in part to the uncertainty in its practical application, and the difficulties that may entail changing processes, digitizing them, and integrating innovations in a sector as conservative as construction. Within BERTIM project, prefabricated wooden modules that integrate both carpentry and HVAC distribution networks and a methodology for the energy rehabilitation of buildings through a digitalized process have been developed. These developments have been implemented in two buildings which has allowed to identify the main barriers and difficulties that construction companies encounter in the execution. The main difficulties are: i) the method of capturing building data for the generation of its BIM model, ii) the integration of the HVAC distribution networks into the modules iii) the installation procedure of the modules on the existing building façade so that minimum execution times are ensured even in façades with many deviations and a large lack of verticality. This study addresses these difficulties and proposes practical solutions that will allow industrials to implement digital processes and will foster the use of prefabricated modules in the buildings’ energy rehabilitation.